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Potamarcha congener
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Potamarcha congener : ウィキペディア英語版
Potamarcha congener

''Potamarcha congener'' is a species of dragonfly in the genus ''Potamarcha''. It was first described by Jules Pierre Rambur in 1842,〔 almost fifty years before Friedrich Karsch described its genus.〔(【引用サイトリンク】publisher=John Caroll University )
''P. congener'' is one of two species making up the genus ''Potamarcha'', together with ''P. puella''.〔
This dragonfly is found in terrestrial areas with standing water. This can include near small ponds or rice fields.〔
''P. congener'' is common through much of its range, which stretches through parts of South Asia, South-East Asia, and Oceania, including in countries such as India, Indonesia, China, Australia, and Vietnam. Owing to its wide distribution, the species has been classified as Least Concern by the International Union for Conservation of Nature.
''Potamarcha congener'', commonly known as yellow-tailed ashy skimmer or common chaser, is a medium sized dragonfly with bluish black thorax and yellow tail with black markings. Face is olivaceous yellow to steel black or brown. Eyes are reddish brown above and bluish grey below. In male adults, thorax and first four segments of the abdomen are covered with bluish pruinescence. In young adults, yellow markings are visible through the pruinescence. The rest of the abdomen is black with orange markings, with the last two segments entirely black. The female thorax has yellow and black stripes on the sides. The abdomen is black with dull orange markings, and has prominent flaps on each side of segment eight. The flaps may serve to hold the eggs in place during oviposition.

File:Potamarcha congener female in Kadavoor.jpg|Female (note the prominent flaps on segment eight)
File:Potamarcha congener female 2 by kadavoor.jpg|Female in obelisk posture

==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Potamarcha congener」の詳細全文を読む



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